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Large-visual-field off-axis four-mirror lens device

A technology with a large field of view and a lens, applied in the field of large field of view off-axis four-mirror lens devices, can solve the problems of structural specific strength, specific stiffness lightweight rate and thermal stability limitations, and achieve high lightweight rate and thermal stability. Good performance and good assembly process

Inactive Publication Date: 2017-10-27
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

Although the realization method of the combined support structure is more flexible, it has limitations in terms of structural specific strength, specific stiffness, lightweight rate and thermal stability.

Method used

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  • Large-visual-field off-axis four-mirror lens device
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  • Large-visual-field off-axis four-mirror lens device

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Embodiment Construction

[0023] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The orientation or positional relationship indicated by “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, and “outer” are based on the orientation shown in the drawings or The positional relationship is only for the convenience of describing the present invention and simplifying the ...

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Abstract

The invention provides a large-visual-field off-axis four-mirror lens device which comprises an integrated lens frame and also comprises a first mirror, a second mirror, a third mirror, a fourth mirror and a detector orderly installed on the lens frame along a light transmission direction. The first mirror is fixed to a first lens seat which is installed on the lens frame. The second mirror is fixed to a second lens seat which is installed on the lens frame. The third mirror is fixed to a third lens seat which is installed on the lens frame. The fourth mirror is fixed to a fourth lens seat which is installed on the lens frame. The large-visual-field off-axis four-mirror lens device provided by the invention has the advantages of good mechanical performance, a high lightweight ratio, small thermal deformation and good comprehensive space environment adaptability.

Description

Technical field [0001] The invention relates to the technical field of space remote sensing applications, in particular to an off-axis four-reflection lens device with a large field of view. Background technique [0002] The off-axis reflective optical system has no chromatic aberration, no center obstruction, good temperature adaptability, and high degree of light weight. It can also correct multiple aberrations when using aspheric mirrors, and has a wide range of applications in the field of space remote sensing. The space reflection optical system is mainly constrained by the optical structure, launching and carrying conditions and the space track environment. The supporting structure needs to have high static stiffness, dynamic stiffness, structural strength and thermal dimensional stability at the same time to ensure that the optical components and supporting structure are The inner lens has small distortion, strong resistance to mechanical environment, and good thermal envi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B17/06
CPCG02B17/0663
Inventor 郭权锋赵伟国陈波刘阳
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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